For those who has the same problem as @Snehal12. This might help you out.

Got it working by stopping all of the instances of the VideoPlayerHelper before dismissing the view.

- (void)dismiss 
{ 
    EAGLView* arView = [self getARView];
    for (int i = 0; i < NUM_VIDEO_TARGETS; ++i) {
        VideoPlayerHelper* player = [arView getVideoPlayerHelper:i];
        [player stop];
    }
    [self dismissViewControllerAnimated:NO completion:nil];
 }

If you are reconfiguring the code to run in your own ViewControllers, you need to make sure that all existing functionality gets called.  If not, then you may see strange behaviour.

If you look in VideoPlayerHelper.m you will see the method below.

Check that this is being called in order to top the video playback.

HTH

N

// Stop playback (on-texture player only)

- (BOOL)stop

{

    BOOL ret = NO;

    // Control available only when playing on texture (not the native player)

    if (PLAYING == mediaState) {

        if (PLAYER_TYPE_ON_TEXTURE == playerType) {

            [dataLock lock];

            mediaState = STOPPED;

            // Stop the audio (if there is any)

            if (YES == playAudio) {

                [player pause];

            }

            // Stop the frame pump thread

            [self waitForFrameTimerThreadToEnd];

            // Reset the playback cursor position

            [self updatePlayerCursorPosition:PLAYER_CURSOR_POSITION_MEDIA_START];

            [dataLock unlock];

            ret = YES;

        }

        else {

            NSLog(@"Stop control available only when playing video on texture");

        }

    }

    return ret;

}